JPS597156Y2 - On-vehicle battery support device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a support device for a battery mounted on a vehicle.

A typical example of the above-mentioned conventional device is shown in Figures 1 and 2.
As shown in the figure, a battery 1 is mounted on a battery support stand 2 (for example, welded) that is securely fixed (for example, by welding) in the vehicle engine room or the like.
A tightening rod 4 (hereinafter simply referred to as the rod) is installed between the battery frame 3 (hereinafter simply referred to as the frame) placed on the battery frame 3 (hereinafter simply referred to as the frame) placed on the battery 1 (hereinafter simply referred to as the support stand) and the support stand 2. It is designed to support battery 1.

As shown in the figure, in the frame 3, both ends 3a1 of the base part 3a are in surface contact with the ends of the upper surface of the battery 1, and the outer part 3b is stepped and shaped, and the through hole 3b of the rod 4 is formed in the bottom side 3b1.
2 is shaped so that the rising side 3b3 is parallel to the side wall of the battery 1.

In such a support device, the battery 1 is likely to shift in the X-X direction or rotate in the Y-Y direction due to inertia caused by rapid acceleration or deceleration of the vehicle or vehicle vibration. If this displacement/rotation (the Y direction is referred to as the lateral direction) occurs continuously over a long period of time, there is a risk that the tightening nut 5 of the rod 4 may loosen and the battery 1 may fall off.

The details of this shift and rotation are as follows.

If the tightening force by rod 4 is FO, then the frictional force Fs to prevent lateral displacement or rotation is F
s=μFo=const---■, and only this constant frictional force Fs contributes to suppressing the shift rotation, and the frame rising edge 3ba does not participate in any way.

This is because the lower end 4a of the rod 4 is simply locked in the rod insertion hole 2a of the support base 2, and the battery 1 overcomes the frictional force F5 and shifts, causing the side wall of the battery 1 and the rising edge 3b3 to come into contact. Even if they make contact, no force is applied to the rising edge 3b3 in the direction of preventing displacement, so the upper surface of the battery 1 exerts a force in the direction of pushing up the frame 3 within the range in which the rod 4 can move together with the frame 3. This is because the battery 1 can freely shift and move until the reaction force is generated on the rod 4 and the frictional force increases in a direction that prevents the battery 1 from moving.

(Position of dashed line in Figure 2) For this reason, the amount of deviation until the frictional force that prevents the battery 1 from slipping increases is too large, and the nut 5 is damaged due to long-term use under frequently changing operating conditions such as in a vehicle. They become loose easily and may even fall off.

If this rod 4 is a rigid body (actually, it cannot be made into a rigid body), the side wall of the battery 1 and the rising edge 3b3 come into contact with each other, so that the rod 4 generates a reaction force to prevent the battery 1 from shifting. However, it is customary to make the rod 4 a rigid body in order to ensure the versatility of the support base when assembling the vehicle body by placing batteries of various shapes on the same support base. In reality, the lower end of the rod is rotatably locked to the support base so that it can be adapted to various shapes of the battery 1 and frame 3 to some extent.

In view of the conventional situation, the present invention has almost no difference in price and workability from the conventional one, and after the battery has shifted and rotated by an initial minute distance, the frictional force to prevent shifting is effectively increased. The present invention provides a battery support device that prevents the battery 1 from shifting and rotating as much as possible.

The following will explain the embodiments shown in the drawings.

In FIGS. 3 and 4, when the frame 6 is placed on the battery 1, it includes a base portion 7 existing within the approximate planar projection of the battery 1, and a peripheral portion 8 extending from the base portion 7 in the longitudinal direction of the frame. When this frame 6, in which the base part 7 and the peripheral part 8 are integrally formed (made of sheet metal, resin, etc.), is placed on a board, the base part 7 is located at the center of the frame 6. The portion 7a is shaped so as to be separated from the upper surface of the battery 1, and the both end portions 7b are shaped so as to be in surface contact with the upper surface end portions of the battery 1.

On the other hand, the peripheral part 8 is located in the direction where the first batten exists (i.e., the fourth
It is set so that the angle θ between the end portion 7b of the base portion and the peripheral portion 8 is an obtuse angle.

This angle θ is preferably an obtuse angle of approximately 135°.

The reason why this value of θ is preferable will become clear from the explanation of the operation described below.

An insertion hole 8a for the rod 4 is provided in the center of the peripheral portion 8, and the periphery of the insertion hole 8a is shaped into a trapezoid by drawing and forms a portion that is tightened by a tightening nut 5.

Note that the support stand 9, rod 4, and tightening nut 5 are the same as before, so the details are omitted, but the support stand 9 is
Base part 10 existing within the approximate planar projection of the moon and this base part 1
At least frame length greater than 0? Peripheral part 1 extending in the direction
1, and an insertion hole 11a for the rod 4 is provided in the peripheral portion 11.

The reason why the central part 7a of the base part 7 of the frame 6 mentioned above is separated from the top surface of the battery 1 is to make it less susceptible to the influence of leakage liquid from the battery 1, and to prevent interference with the liquid injection cap 1a of the battery 1. This is to prevent this, and if the above-mentioned problem does not occur, it goes without saying that the center portion 7a of the base portion may be entirely in contact with the upper surface of the battery 1.

Next, the operation of this embodiment will be explained.

When the battery 1 is clamped between the support stand 9 and the frame 6 by the screwing of the rod 4 and the tightening nut 5, the tightening force is F as in the conventional method (2).

On the other hand, a frictional force F, = μFo = Const---■ acts in the opposite direction to the direction in which the displacement is attempted.

For example, due to rapid acceleration/deceleration of the vehicle, a force greater than the frictional force F8 acts on the battery 1 as shown in FIG.
The upper end of the battery 1 touches the peripheral part 8 of the frame 6 with force f so that it deviates slightly (see the broken line in Figure 5).
and press the peripheral portion 8 of the frame.

This pressing force f generates an increase in frictional force F'5 in addition to Fs, and this increased frictional force F%/8 prevents the battery 1 from further shifting. It increases the ability to do things.

To explain this specifically, the pressing force f comes into contact with the peripheral portion 8 and becomes component forces f1 and f2, as shown in FIG. 5, and each component force f1 and f2 is a vertical and horizontal component force f1 , f1
.

and f2, f2. It comes to be expressed as the resultant force of

(Here, the second 1 in the subscript of f indicates the vertical direction and 2 indicates the horizontal direction.) Of the above component forces, the one that contributes to the increase in the frictional force acting between the battery 1 and the support base 9 is the vertical component f1,
It is f2.

In other words, as is clear from Fig. 5, the following equation holds f1=fsinθ1f2=fCOSθ1---■f
,1=f1cosθ,f2,=f2sinθ−111■
．． ”.fl,=fsinθlCOSθlf21=fCO
SθISinθ1−■ However, θ is the angle formed by the extension line M of the end of the frame base portion and the extension line N of the inclined surface of the peripheral portion 8.

Now, to explain the vertical components f1 and f2, is the downward vertical component f2 directly supporting the battery 1? This vertical component force f2 becomes an increase in the frictional force that restrains the battery 1 from moving in the horizontal direction.

Also, the upward vertical component fil becomes a force that pushes up the frame 6, but since the frame 6 is connected to the support stand 9 by the rod 4, it does not move, and conversely, the downward vertical component force f1 is applied from the frame 6 to the battery 1. will act as a reaction force, and this downward vertical component force fil will be a force that presses the battery 1 against the support stand 9, so this vertical component force f will restrain the battery 1 from moving in the horizontal direction. This is an increase in frictional force.

Therefore, the increase in the frictional force F'S that acts when the battery 1 comes into contact with the frame peripheral part 8 is F's=μf10μf
2=μ(f, +f2> −−−−−■.

Substituting the ■formula into this ■formula, we get F's=,cz (fsi
nθ, cosθ1−1− fcosθ1sinθ1)=
2μfSinθICOSθ. = μfsin 2θ,
1--1■ Therefore, the angle θ such that O<Sin2θ1≦1
1, F's becomes a value that effectively acts as a frictional force, and becomes a force that strongly resists and restrains the battery 1 from shifting due to contact with the frame peripheral portion 8.

The directness of this θ1 is 0 <sin 'lθ≦1, so 0<2
θ1〈180゜. '． o <θ1≦90°, and when viewed from the angle θ of the frame 6, θ1+θ=180°.゜． θ=180° - θ1 becomes an obtuse angle of 90°<θ<180°.

Therefore, the value of θ1 at which the frictional force F'S is maximum is θ1-45
degree, F's=μf, and the angle θ becomes 135 degrees.

As is clear from the above description, this embodiment provides the following effects.

(1) Due to the biting contact between the peripheral part 8 of the frame 6 and the upper end of the battery 1, a frictional force F's is generated that strongly opposes the battery 1's tendency to shift. Being able to prevent misalignment.

(2) The frictional force F's acts immediately when the battery 1 moves by a minute distance, and an upward component force fil acts between the frame 6 and the rod 4, so the amount of deviation is actually extremely small. To prevent an increase in the amount of deviation that causes loosening of the tightening nut 5, to enable long-term use, and to eliminate the fear of falling off.

(3) Since the frame 6 has the inclined peripheral portion 8, positioning when placing the frame 6 on the butthole is facilitated, and assembly workability is improved.

(4) It is sufficient to simply replace the frame 6 with a conventional battery support device.

(5) The frame 6 can be manufactured by simply pressing or molding a single plate material or integrally molding it with resin, and the productivity will not be reduced compared to conventional frames.

Next, another embodiment of the present invention will be described.

In FIG. 6, the support stand 9 is connected to the battery 1 as described above.
It is composed of a base body part 10, which generally exists in a plane projection, and a peripheral part 11 extending from this base body part 10 at least in the longitudinal direction of the frame, and has an insertion hole 11a for the rod 4.
The peripheral part 11C between the panel surface 11b where the battery 1 is opened and the lower end of the battery 1 is inclined in the direction in which the battery 1 exists, that is, in the upward direction in FIG. Although it is in surface contact with the lower surface of Batsute January, it is not necessarily necessary that the entire surface is in contact with it.

) is set so that the angle θ between the end portion of the frame and the peripheral portion 11 is an obtuse angle.

In the case of this embodiment as well, the same frictional force F'S as in the previous embodiment is generated, and the effect of preventing the battery 1 from shifting can be exhibited. Although it is difficult to apply this method, it does not reduce installation workability or productivity.

Furthermore, by combining this embodiment with the previous embodiment, that is, by providing an inclined peripheral portion on the side of the support base 2 and by making the frame 6 have the structure shown in FIGS. This further improves the prevention effect.

In yet another embodiment, as shown in FIG. 7, the peripheral portion 8 of the frame 6 is divided into a portion having a rod insertion hole and a portion having an inclined shape or for generating the frictional force F'S. This improves the productivity of the frame 6.

In other words, this embodiment achieves almost the same effects as the embodiment shown in FIG. 3, but in particular, when the frame 6 is made of a pressed sheet metal product, the rigidity of the periphery of the rod insertion hole 8a is improved without deep drawing. Therefore, the productivity of the frame can be improved by simply shaping the bead.

Although not particularly shown in the drawings, it goes without saying that the frame and the support base can be constructed of various shapes and materials without departing from the purpose and characteristics of the present invention.

In addition, in each embodiment, a battery 1 is attached to the peripheral portion 8 of the frame 6 in advance.
With the upper end of the rod in contact with the rod 4,
However, in that case, it is difficult to position the frame 6 when installing it, and both nuts 5 must be equally tightened at the same time. This is the reason why I am here.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing a conventional example, Fig. 2 is a side view including a cross section taken along line III in Fig. 1 of the frame support during assembly shown in Fig. 1, and Fig. 3 shows an embodiment of the present invention. 4 is an exploded perspective view, FIG. 4 is a side view including a cross section taken along line IV-IV in FIG. 3 of the frame and support stand during assembly in FIG. 3, and FIG. 5 is an action explanatory diagram showing the state of force during acceleration and deceleration of the vehicle. , Figure 6,
FIG. 7 is a side view and a perspective view of only the frame, respectively, similar to FIG. 4, showing another embodiment of the present invention. 1... Battery, 2... Support stand, 4... Rod,
5... Nut, 6... Frame, 7... Base part,
7a... Central part, 7b... Both ends, 8... Peripheral part, 8a... Insertion hole, 9... Support stand, 10... Base part, 11... Peripheral part, 11 a...Insertion hole.

Claims (1)

[Scope of utility model registration request] In a battery support device in which a frame is disposed on the upper surface of the battery and a tightening element is installed between the frame and the battery support base to clamp the battery, the frame and the support base are each a base portion that exists within the approximate planar projection of the battery. and,
and a peripheral part extending from the base part in the longitudinal direction of the frame, and at least one of the peripheral parts of the frame and the support base is inclined to form an angle θ between the end part of the base part and the inclined surface of the peripheral part. A support device for an on-vehicle battery, characterized in that the angle is shaped to form an obtuse angle of approximately 135°.